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Flight Reliability

DL 1387 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1387 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

81%
Arrive within 15 minutes
2 min early
Average arrival delay
3.9%
Cancelled
15 min early
Median arrival delay

Based on 689 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(99 flights)
  • Tue79%(97 flights)
  • Wed80%(97 flights)
  • Thu78%(88 flights)
  • Fri78%(91 flights)
  • Sat85%(95 flights)
  • Sun81%(94 flights)
On-time by departure window
  • 12–3 PM—(9 flights)
  • 3–6 PM80%(342 flights)
  • 6–9 PM81%(310 flights)
On-time trend by month
72%
May

Jun 62% → May 72% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%55
July 202578%55
August 202582%61
September 202583%60
October 202583%60
November 202586%56
December 202580%50
January 202682%56
February 202685%52
March 202689%62
April 202681%58
May 202672%36
Departures on time
83%
Diverted
0.1%
Flights flown
661
Months covered
12

Keep nerding

Based on 689 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.